JPWO2017179738A1 - 気体分離膜の製造方法 - Google Patents
気体分離膜の製造方法 Download PDFInfo
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- JPWO2017179738A1 JPWO2017179738A1 JP2018512116A JP2018512116A JPWO2017179738A1 JP WO2017179738 A1 JPWO2017179738 A1 JP WO2017179738A1 JP 2018512116 A JP2018512116 A JP 2018512116A JP 2018512116 A JP2018512116 A JP 2018512116A JP WO2017179738 A1 JPWO2017179738 A1 JP WO2017179738A1
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- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
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Abstract
(a)工程:第1溶媒に分散されたシリカナノ粒子の表面を、前記第1溶媒に分散された状態のまま反応性官能基含有化合物により処理して、反応性官能基修飾シリカナノ粒子の第1溶媒分散液を得る工程、(b)工程:前記(a)工程で得られた第1溶媒分散液の分散媒を乾燥させることなく第2溶媒に置換後、第2溶媒存在下で反応性官能基修飾シリカナノ粒子にデンドリマー形成用モノマー又はハイパーブランチ形成用モノマーを反応させて、デンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子を得る工程、(c)工程:前記(b)工程で得られた前記デンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子をマトリクス樹脂と混合する工程、(d)工程:前記(c)工程で得られた混合液を基材に塗布後、溶媒を除去する工程。
Description
第1観点:下記の(a)、(b)、(c)及び(d)工程を含むことを特徴とする気体分離膜の製造方法:
(a)工程:第1溶媒に分散されたシリカナノ粒子の表面を、前記第1溶媒に分散された状態のまま反応性官能基含有化合物により処理して、反応性官能基修飾シリカナノ粒子を調製して反応性官能基修飾シリカナノ粒子の第1溶媒分散液を得る工程、
(b)工程:前記(a)工程で得られた反応性官能基修飾シリカナノ粒子の第1溶媒分散液の分散媒を乾燥させることなく第2溶媒に置換後、第2溶媒存在下で反応性官能基修飾シリカナノ粒子にデンドリマー形成用モノマー又はハイパーブランチ形成用モノマーを反応させて、前記反応性官能基にデンドリマー高分子又はハイパーブランチ高分子が付加されたシリカナノ粒子を調製してデンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子を得る工程、
(c)工程:前記(b)工程で得られた前記デンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子をマトリクス樹脂と混合する工程、
(d)工程:前記(c)工程で得られた混合液を基材に塗布後、溶媒を除去する工程。
第3観点:前記第2溶媒は、テトラヒドロフラン、N−メチルピロリドン、ジメチルアセトアミド、ジメチルホルムアミド及びγ―ブチロラクトンから選択される少なくとも1種であることを特徴とする第1観点又は第2観点に記載の気体分離膜の製造方法。
第4観点:前記反応性官能基含有化合物は、シランカップリング剤であることを特徴とする第1観点〜第3観点のいずれか一つに記載の気体分離膜の製造方法。
第5観点:前記反応性官能基含有化合物は、下記の一般式(1)で表される化合物であることを特徴とする第1観点〜第4観点のいずれか一つに記載の気体分離膜の製造方法。
第8観点:前記デンドリマー形成モノマーとして、2個以上のアミノ基を有する化合物と2個以上のカルボキシル基を有する化合物を用いることを特徴とする第1観点〜第6観点のいずれか一つに記載の気体分離膜の製造方法。
第9観点:前記ハイパーブランチ形成用モノマーとして、1個のカルボキシル基と2個以上のアミノ基又はハロゲン原子を有する化合物を用いることを特徴とする第1観点〜第6観点のいずれか一つに記載の気体分離膜の製造方法。
第10観点:前記ハイパーブランチ形成用モノマーとして、1個のアミノ基と2個以上のカルボキシル基又はハロゲン原子を有する化合物を用いることを特徴とする第1観点〜第6観点のいずれか一つに記載の気体分離膜の製造方法。
第11観点:前記マトリクス樹脂は、ポリイミド、ポリスルホン、ポリジメチルシロキサン、ポリ置換アセチレン、ポリ−4−メチルペンテン、天然ゴムからなる群から選ばれる少なくとも1種であることを特徴とする第1観点〜第10観点のいずれか一つに記載の気体分離膜の製造方法。
第12観点:前記(c)工程において、デンドリマー高分子又はハイパーブランチ高分子が付加されたシリカナノ粒子の混合液中の含有率は、1質量%〜70質量%であることを特徴とする第1観点〜第11観点のいずれか一つに記載の気体分離膜の製造方法。
第13観点:前記(d)工程において、溶媒の除去が加熱により行われることを特徴とする第1観点〜第12観点のいずれか一つに記載の気体分離膜の製造方法。
第14観点:前記(d)工程において、溶媒の除去が真空中で行われることを特徴とする第1観点〜第13観点のいずれか一つに記載の気体分離膜の製造方法。
DABA修飾シリカナノ粒子のNMP分散液の配合を膜組成の全固形分に対して30質量%とした以外は、実施例1と同様に行って複合膜を作製し、その気体透過測定を行った。
DABA修飾シリカナノ粒子のNMP分散液の配合を膜組成の全固形分に対して50質量%とした以外は、実施例1と同様に行って複合膜を作製し、その気体透過測定を行った。
2Lナス型フラスコにナノシリカの水分散液(スノーテックス−O、日産化学工業(株)製、シリカ濃度:20質量%、平均一次粒子径12nm)100gを量り取り、超純水750mLで希釈した。ここにAPTES(東京化成工業(株)製)131.2mLを添加し、マグネチックスターラーを用いて、室温下で48時間撹拌した。この反応液を遠心分離(1500G、20分)にかけることにより粒子を沈殿させ、上澄みを捨てた後、超純水を加え、超音波洗浄器を用いて沈殿物を再分散させた。この操作を3回繰り返すことにより、APTES修飾シリカナノ粒子の水分散液950mLを得た。作製したAPTES修飾シリカナノ粒子のAPTES修飾状況を確認するために、得られたAPTES修飾シリカナノ粒子の水分散液を110℃で15時間真空乾燥後、TGA装置(DTG−60H、(株)島津製作所製)を用いて、熱重量分析を行った。この結果、表面APTES修飾シリカナノ粒子の重量内訳は、APTES8.9質量%、シリカナノ粒子91.1質量%であった。
DABA修飾シリカナノ粒子の配合を膜組成の全固形分に対して30質量%とした以外は、比較例1と同様に行って複合膜を作製し、その気体透過測定を行った。
DABA修飾シリカナノ粒子の配合を膜組成の全固形分に対して40質量%とした以外は、比較例1と同様に行って複合膜を作製したが、膜が破損したため、気体透過測定を行うことはできなかった。
Claims (14)
- 下記の(a)、(b)、(c)及び(d)工程を含むことを特徴とする気体分離膜の製造方法:
(a)工程:第1溶媒に分散されたシリカナノ粒子の表面を、前記第1溶媒に分散された状態のまま反応性官能基含有化合物により処理して、反応性官能基修飾シリカナノ粒子を調製して反応性官能基修飾シリカナノ粒子の第1溶媒分散液を得る工程、
(b)工程:前記(a)工程で得られた反応性官能基修飾シリカナノ粒子の第1溶媒分散液の分散媒を乾燥させることなく第2溶媒に置換後、第2溶媒存在下で反応性官能基修飾シリカナノ粒子にデンドリマー形成用モノマー又はハイパーブランチ形成用モノマーを反応させて、前記反応性官能基にデンドリマー高分子又はハイパーブランチ高分子が付加されたシリカナノ粒子を調製してデンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子を得る工程、
(c)工程:前記(b)工程で得られた前記デンドリマー高分子又はハイパーブランチ高分子付加シリカナノ粒子をマトリクス樹脂と混合する工程、
(d)工程:前記(c)工程で得られた混合液を基材に塗布後、溶媒を除去する工程。 - 前記第1溶媒は、水及び炭素原子数1〜4のアルコールから選択される少なくとも1種であることを特徴とする請求項1に記載の気体分離膜の製造方法。
- 前記第2溶媒は、テトラヒドロフラン、N−メチルピロリドン、ジメチルアセトアミド、ジメチルホルムアミド及びγ―ブチロラクトンから選択される少なくとも1種であることを特徴とする請求項1又は2に記載の気体分離膜の製造方法。
- 前記反応性官能基含有化合物は、シランカップリング剤であることを特徴とする請求項1〜3のいずれか一項に記載の気体分離膜の製造方法。
- 前記デンドリマー形成用モノマーとして、2個以上のカルボキシル基を有する化合物と2個以上のアミノ基を有する化合物を用いることを特徴とする請求項1〜6のいずれか一項に記載の気体分離膜の製造方法。
- 前記デンドリマー形成モノマーとして、2個以上のアミノ基を有する化合物と2個以上のカルボキシル基を有する化合物を用いることを特徴とする請求項1〜6のいずれか一項に記載の気体分離膜の製造方法。
- 前記ハイパーブランチ形成用モノマーとして、1個のカルボキシル基と2個以上のアミノ基又はハロゲン原子を有する化合物を用いることを特徴とする請求項1〜6のいずれか一項に記載の気体分離膜の製造方法。
- 前記ハイパーブランチ形成用モノマーとして、1個のアミノ基と2個以上のカルボキシル基又はハロゲン原子を有する化合物を用いることを特徴とする請求項1〜6のいずれか一項に記載の気体分離膜の製造方法。
- 前記マトリクス樹脂は、ポリイミド、ポリスルホン、ポリジメチルシロキサン、ポリ置換アセチレン、ポリ−4−メチルペンテン、天然ゴムからなる群から選ばれる少なくとも1種であることを特徴とする請求項1〜10のいずれか一項に記載の気体分離膜の製造方法。
- 前記(c)工程において、デンドリマー高分子又はハイパーブランチ高分子が付加されたシリカナノ粒子の混合液中の含有率は、1質量%〜70質量%であることを特徴とする請求項1〜11のいずれか一項に記載の気体分離膜の製造方法。
- 前記(d)工程において、溶媒の除去が加熱により行われることを特徴とする請求項1〜12のいずれか一項に記載の気体分離膜の製造方法。
- 前記(d)工程において、溶媒の除去が真空中で行われることを特徴とする請求項1〜13のいずれか一項に記載の気体分離膜の製造方法。
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